Stone-sawing machine.



F. S. MISKIN.

STONE SAWING MACHINE.

APPLICATION FILED DIIO.4,1909.

980,878. 7 Patented Jan.3,191 1.

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whom/13 'F. S. MISKIN. STONE'SAWING MAGHINE.

APPLICATION FILED 1120.4,1909. I 980,878, v Patented Jan.3,1911.

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awuv/wliom FRANKLIN S. MISKIN, 0F RIG-BY, IDAHO.

STONE-SAWING MACHINE.

Specification of Letters Patent.

Application filed December 4, 1909.

Serial No. 531,328.

To all whom it may concern.

Be it known that I, FRANKLIN S. MISKIN, a citizen of the United States, residing at Rigby, in the county of Fremont and State of Idaho, have invented new and useful Improvements in Stone Sawing Machines, of which the following is a specification.

This invention relates to stone cutting ma chines, the object of the invention being to provide stone sawing mechanism adapted to be erected adjacent to a ledge or body of stone to be operated upon and embodying a novel arrangement of endless sawing or cutting cables combined with means for maintaining the same under the necessary tension and directing or guiding the same in proper relation to the stone as said cables operate to form parallel cuts in and through the body of stone, dividing the same into slabs.

The apparatus herein described is adapted for use on stone, marble, lava or any other hard substance.

With the above and other objects in view, the nature of which will more fully appear as the description proceeds, the invent-ion consists in the novel construction, combination and arrangement of parts herein fully described, illustrated and claimed.

In the accompanying drawings :Figure 1 is a side elevation of the apparatus showing a channeled ledge of stone and illustrating the manner in which the apparatus is used. Fig. 2 is a plan view of the same partly in section. Fig. 3 is an end view thereof. Fig. 4 is a detail view partly in section of one of the carriages showing the supporting rails in cross section. Fig. 5 is a plan view of one of the vertical runners showing one of the posts in cross section. Fig. 6 is a side elevation similar to Fig. 1 showing another manner of utilizing the same apparatus. Fig. 7 is a plan view of the arrangement shown in Fig. 6.

The apparatus of this invention comprises essentially a plurality of parallel endless saws 1 in the form of wire cables which pass around drive wheels 2 on a common drive shaft 3 and also around a corresponding series of tension wheels 4: arranged on a shaft 5 mounted in a traveling frame 6 supported by rollers 7 journaled on the frame 6 and traveling upon a stationary frame 8, said traveling frame 6 having connected to one end thereof a rope or cable 9 which passes around a fixed pulley 10 on the stationary frame 8 and has attached to it a weight 11, said weight serving to draw the frame 6 in a direction which will produce the requisite tension on the endless sawing cables as will be readily understood by reference to Fig. 1. It may be noted at this point that any desired number of sawing cables may-be employed and also a corresponding number of drive wheels 2 and tension wheels 1. It will also be understood that the drive wheels 3 may be driven by any suitable motor in accordance with the power required by the apparatus.

In the preliminary installation of the apparatus, the ledge or body of stone shown at 12 is formed at suitable intervals with channels 13 and at opposite ends of said channels are erected guide posts 1 1 straight from top to bottom and connected at suitable points by means of cross bars 15 arranged in parallel relation to each other and having their upper edges toothed as indicated at 16 to form rack bars upon which a carriage 17 is mounted for movement lengthwise of said bars 15. By reference to Fig. 3, it will be noted that each of the posts 14 is provided with a vertical or longitudinal series of holes 18 through which are inserted removable pins or bolts 19 enabling the elevation of the bars 15 to be regulated to suit conditions so as to dispose the carriage 17 at the required distance from the top of the ledge of stone to enable the cutting cables to pass over and through the same. Each of said posts is formed as shown in detail in Fig. 5 wherein it will be seen that the posts comprise a fiat body portion 20 and side flanges 21 projecting on opposite sides of the body 20 and forming tracks for the rollers of a vertically moving runner hereinafter particularly described.

The carriage comprises the parallel sides 22 connected by a top plate 23 from which arise bearing lugs 24 which carry a horizontal shaft 25 upon which is mounted fast a series of revolving return or idle pulleys 26 having their peripheries grooved to receive the cables 1 above referred to, thus providing for carrying the return portions of the cutting cables back over the top of the carriage as clearly shown in Figs. 1, 2 and 3. Parallel axles 27 are j ournaled in the opposite sides 22 of the carriage and equipped with pinions 28 which cooperate with the teeth of the rack bar 16 as indicated in Figs. 3 and 4. When adjusted to the proper posi- Patented Jan. 3, 1911.

tion the carriage 17 is held by a detent 29 which engages one of the pinions 2% as shown in Fig. thus preventing any further movement of the carriages along the slmporting rack bars 15. The carriage further comprises a supporting standard 30 which extends downward to the bottom of the channel formed between the separated portions of the ledge of stone as shown in Fig. 3, the standard 30 being provided at its lower end with a roller 31 which is supported upon and travels lengthwise of a track rail 32. The standard 30 is preferably formed as illustrated in detail in Fig. 41- wherein it is seen to comprise the opposite parallel members 3 the lower ends of which are bent inwardly toward each other and connected by a tie plate 34, the ends of the members 33 being further connected by means of the axle 35 of the roller 31.

Mounted to move up and down between each post 14 and the COl'lGSPOIlCllIlg carriage supporting standard 30 is a presser frame comprising a series of parallel uprights 36 connected by tie or stringer bars 37. At one end the stringer bars operate between the parallel members 33 of the standard 30, the standard thus forming a guide for the presser frame. At the opposite side the presser frame is provided with guide rollers 38 which run in contact with the adjacent edges of the flanges 21 of the posts 14 as clearly shown in Figs. 3 and 5, the rollers 38 being arranged in pairs and mounted on a common axle 39 carried by a bracket -10 on the presser frame. The presser frame as a whole is primarily elevated by means of a hoisting cable 41 which runs over a pulley 42 on the bottom of the carriage 17 and is connected to an eye 43 or its equivalent on the presser frame. In order to hold said presser frame smiigly against the post 141:, said presser frame is provided at the side adjacentthe post with a runner 14 of open rectangular shape as best illustrated in Fig. 5, said runner frame being connected at its inner end to the inner upright 36 as shown at 15. Secured to the outer portion of the runner and within the same is a fork 46 can rying a tension roller 47 which bears against the body 20 of the post, the legs 48 of said fork passing through openings in the runner frame and being surrounded by tension springs e9 which exert an inward pressure against the fork and roller and hold the roller firmly against the post 20 as clearly illustrated in Fig. 5. This causes the presser frame to hug closely to the post as it is moved upwardly and downwardly.

To the lower extremity of each of the uprights 30 there is secured a presser pulley 50 having its periphery grooved to receive one of the szuving cables 1 above referred to. Each pulley 50 is mounted between the arms or blades 51 of a fork secured to the appropriate upright 36. These pulleys are arranged at a distance apart equal to the thickness of the slab to be sawed from the ledge of stone or other material, and the pulleys collectively are arranged as shown in F ig. 1 so as to occur between each ledge of stone whereby the pressure of the cable is distributed along the whole course of stone and directly between the points where the cable passes through the channeled portions of the ledge. I

In order to feed water into the channels during the sawing operation I employ a suitable water tank or reservoir 52 to which water is led by a suitable supply pipe and from which the water is taken by a hose or distributing pipe 5 1 the end of which may be arranged in the channel as will be readily understood.

Another way of utilizing the apparatus is illustrated in Figs. 6 and 7, the same being adapted for sawing stone when placed upon the platform 55 of a car or truck mounted to run back and forth on suitable track rails 56. As the structure illustrated in F 6 and 7 is adapted to be permanently located at a certain place, instead of employing the presser frame hereinabove described, the saw guide wheels or pulleys indicated at 57 are mounted on weighted runners 58 movable up and down in vertical guide ways 59 in the posts 60 which correspond with the posts 1st above referred to. It is also within the scope of this invention to utilize the form and arrangement of apparatus shown in Figs. 6 and 7 in connection with and in addition to the form illustrated in Figs. 1 to 5 inclusive for the purpose of subdividing the slabs into sections after they have been removed from the quarry and placed upon the trucks.

In order to provide for conveniently shifting the apparatus to make a new cut, the

frame 8 on which the weight controlled carriage 6 is mounted is itself mounted upon parallel track rails 61 and held from displacement by means of clips 62 projecting from the bottom of the carriage downwardly and engaging beneath the heads of the rails 61 as shown in Fig. 1. I11 like manner the frame 63 on which the shaft 3 is journaled is mounted on other track rails 64 to which said carriage is connected by means of the clips 65 to prevent derailment of said carriage as it is slid along the track rails.

It will of course be understood that any desired number of cables may be employed and that suitable power commensurate with the number of cables employed may be used to drive said cables. In this way any desired number of cuts may be simultaneously made and the output of the quarry correspondingly increased or diminished.

lVhat is claimed is 1. In stone sawing apparatus, the combination of a plurality of endless sawing cables, means for driving said cables, means for maintaining said cables under tension, series of posts arrayed in pairs, horizontal bars connecting said posts in pairs, a carriage movable along said bars and embodying a combined supporting and guiding standard, and a vertically movable presser frame guided by one of said posts and the standard and provided with presser pulleys in connection with which the sawing cables operate.

2. In stone sawing apparatus, the combination with a plurality of endless sawing cables, means for producing constant tension on said cables, series of posts in pairs, rack bars connecting said posts, carriages movable along said rack bars, pinions on the carriages cooperating with said rack bars, vertically movable presser frames each guided by one of said posts and the adjacent standard equipped with presser pulleys, and means connecting the presser frames with the carriages whereby said presser frames may be elevated.

3. In stone sawing'apparatus, the combi nation with a plurality of posts, of supporting bars connecting said posts in pairs and adjustable up and down thereon, a carriage movable along said bars, a horizontal shaft journaled on said carriage and provided with cable guiding pulleys, a carriage supporting standard forming a guide extending from the carriage downward, a rail forming a support for the lower end of sa d standard, a presser frame guided by said standard and one of the adjacent posts in its up and down movement, and a tension device for holding said presser frame in operative engagement with said post.

In stone sawing apparatus, the combination with oppositely arranged posts, carriage supporting bars connecting said posts, a carriage mounted to move lengthwise of said supporting bars, a carriage supporting standard forming a guide extending from said carriage downward, a supporting rail for the bottom of said standard, a vertically movable presser frame working between said standard and one of the posts and provided with presser pulleys, rollers on said presser frame moving in contact with the post, and a runner connecting said presser frame with the adjacent post and embodying a yieldingly supporting roller which moves in contact with said post.

5. In stone sawing apparatus, a pair of parallel posts each comprising parallel flanges, a vertically movable presser frame provided with grooved rollers working in contact with said flanges, a runner connecting said presser frame with one of the posts to hold the rollers thereof in engagement with the flangesof the post, and presser pulleys carried by said presser frame.

In testimony whereof I aflix my signature in presence of two witnesses.

FRANKLIN S. MTSKIN.

Witnesses JAMEs H. STEELE, GEORGE W. GODFREY. 

